Gas-controlled marching type pressure regulation device

Abstract

The invention relates to a gas-controlled marching type pressure regulation device. A pressure regulation structure piece comprises a transition bracket, a pressure reduction valve body, a stepping motor, a coupler, a nut, a screw rod, a spring, a membrane and a pressure sensor, wherein the nut is used as a movable spring seat to compress and release the spring; the pressure applied by the spring on the membrane changes, so the membrane deforms, and the aperture of a gas inlet changes with the change of the membrane; closed loop control is implemented inside a system, a gas pressure setting value is set by an industrial personal computer and then is compared and calculated with an actual detection valve acquired by the pressure sensor, after a result is obtained, the industrial personal computer outputs a pulse signal to control the stepping motor to carry out regulation, so as to regulate the aperture of the valve opening; the device can be communicated with an RS232 interface with high stability, can be accessed into the internet, the software adopts a MODBUS-RTU protocol, the data transmission is stable, the generality is good, remote control is carried out, the regulation accuracy is high, the industrial personal computer acquires signals, calculates and compares the results, and then regulates at any time according to the real-time change of gas pressure.

Description

technical field [0001] The invention relates to the field of hydraulic and pneumatic control equipment, in particular to a step-by-step pressure regulating device for pneumatic control, which is widely used in metallurgical and chemical devices. Background technique [0002] At present, the structure of the existing air-controlled pressure regulating device includes an adjustment handle, a pressure regulating spring, a lower spring seat, a diaphragm, a valve core, a valve sleeve, a damping hole and a return spring. When the handle is adjusted clockwise, the pressure regulating spring Push the lower spring seat, diaphragm, and valve core to move downward to open the valve port. After the air flow passes through the valve port, the pressure decreases, and the secondary pressure gas is output from the right side. At the same time, a part of the air flow enters the membrane through the damping hole. In the diaphragm chamber, an upward thrust is generated under the diaphra...

AI Technical Summary

Problems solved by technology

However, the existing air-controlled pressure regulating devices are all manual pressure regulation, and the pressure regulation method is manual control, so it can only be operated on the equipment site, and does not have the conditions for remote adjustment. Therefore, it is necessary to improve the pressure regulation method and equipment structure , to overcome the defects of the prior art and realize remote adjustment

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